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Spindle Break-In
NOTICE
Complete the Initial lubrication procedures
on Page 20 before proceeding. Failure to
follow reasonable lubrication practices as
outlined in this manual could lead to pre-
mature failure of mill and will void warranty.
DO NOT perform this procedure indepen-
dently of Test Run section. Mill could be
seriously damaged if controls are set differ-
ently than instructed in that section.
Complete spindle bearing break-in proce-
dure to prevent rapid wear and tear of
spindle components once mill is placed into
operation.
The spindle break-in procedure distributes lubri-
cation throughout the bearings to reduce the risk
of early bearing failure if there are any "dry" spots
or areas where lubrication has settled in the bear-
ings. You must complete this procedure before
placing operational loads on the spindle for the
first time when the machine is new or if it has
been sitting idle for longer than 6 months.
Always start the spindle break-in at the lowest
speed to minimize wear if there are dry spots.
Allow the spindle to run long enough to warm up
and distribute the bearing grease, then incremen-
tally increase spindle speeds and repeat this pro-
cess at each speed until reaching the maximum
spindle speed. Following the break-in procedure
in this progressive manner helps minimize any
potential wear that could occur before lubrication
is fully distributed.
To perform the spindle break-in procedure:
1.
DISCONNECT MACHINE FROM POWER!
2.
Adjust the pulleys to set the spindle speed to
270 RPM (see Page 29 for detailed instruc-
tion on Adjusting Spindle Speed).
Model G0731 (Mfd. Since 01/17)
3.
Connect the machine to power.
4.
Turn the spindle switch to the FWD position.
5.
Let the mill run at this speed for 20 minutes,
then turn the spindle OFF and wait for it to
stop.
6.
Turn the spindle direction switch to the REV
position, and let it run for another 20 minutes.
7.
Repeat Steps 4–6 for 1720 RPM, and then
3200 RPM.
8.
Turn the mill OFF. The spindle break-in is
now complete and the machine is ready for
operation.
Inspections &
Adjustments
The following list of adjustments were performed
at the factory before the machine was shipped:
•
Gib Adjustments ............................. Page 39
•
Leadscrew Backlash Adjustments .. Page 40
Be aware that machine components can shift
during the shipping process. Pay careful atten-
tion to these adjustments during operation of the
machine. If you find that the adjustments are not
set according to the procedures in this manual or
your personal preferences, re-adjust them.
Since the mill head has been moved around
for shipping purposes, you will need to tram
the spindle with the table to ensure a 90°
alignment. Refer to the Tramming Spindle
section on Page 41 for detailed instructions.
During first 16 hours of use, V-belts will
stretch and seat into pulley grooves. V-belts
must be properly tensioned after this peri-
od to ensure proper power transmission
and avoid reducing life of belts. Refer to
Tensioning/Replacing V-Belts on Page 35.
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